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** Changed in: alsa-driver (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1001450
Title:
No 5.1 sound from the internal speakers on Aspire 6930G after upgrade
to 12.04 (soundcard Realtek ALC888)
Status in alsa-driver package in Ubuntu:
Incomplete
Bug description:
While my laptop is equipped with an internal 5.1 system (including the
"Tuba" subwoofer), only two internal speakers are working after
upgrade to 12.04.
I have added these three lines in /etc/pulse/daemon.conf :
default-sample-format = s16le
default-sample-rate = 48000
default-sample-channels = 6
and these two extra lines in /etc/modprobe.d/alsa-base.conf :
alias snd-card-0 snd-hda-intel
options snd-hda-intel model=auto
While these modifications to the original configurations have worked
for previous Ubuntu versions (tested on Maverick, Natty, Oneiric),
this doesn't seem to work anymore under Precise.
And if the "Sound Settings" menu gives me the option to choose the
Analog 5.1 output system, when I test the speakers, only the "Front
Right" and "Front Left" tests produce sound.
I have carefully checked that none of the other speakers were muted in
alsamixer. The option 6ch in the <Channel> settings of alsamixer was
also selected.
In addition, in alsamixer, only the settings "Speaker" and "PCM" have
an influence on the output volume and they produce exactly the same
effect. Moving the cursors corresponding to "Surround", "Center",
"LFE" has absolutely no result.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC888 Analog [ALC888 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: lionel 2146 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0400000 irq 46'
Mixer name : 'Nvidia MCP77/78 HDMI'
Components : 'HDA:10ec0888,1025015e,00100202
HDA:14f12c06,1025015e,00100000 HDA:10de0006,10de0101,00100000'
Controls : 37
Simple ctrls : 18
Date: Fri May 18 23:00:07 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel successful
Symptom_Card: Built-in Audio - HDA Intel
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Only some of outputs are working
Title: [Aspire 6930G, Realtek ALC888, Speaker, Internal] Playback problem
UpgradeStatus: Upgraded to precise on 2012-04-26 (22 days ago)
dmi.bios.date: 09/12/2008
dmi.bios.vendor: Acer
dmi.bios.version: v0.3121
dmi.board.name: Makalu
dmi.board.vendor: Acer, Inc.
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: Acer, Inc.
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAcer:bvrv0.3121:bd09/12/2008:svnAcer,inc.:pnAspire6930G:pvrNotApplicable:rvnAcer,Inc.:rnMakalu:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A:
dmi.product.name: Aspire 6930G
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer, inc.
mtime.conffile..etc.modprobe.d.alsa.base.conf: 2012-05-18T22:36:10.906528
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